北京城、郊和山区不同强度等级降水变化特征比较

doi:10.12006/j.issn.1673-1719.2017.047

气候变化研究进展 ›› 2017, Vol. 13 ›› Issue (6): 589-597.doi: 10.12006/j.issn.1673-1719.2017.047

北京城、郊和山区不同强度等级降水变化特征比较

袁宇锋¹, 翟盘茂², 李建², 陈阳²

1 南京信息工程大学气象灾害教育部重点实验室气象灾害预报预警与评估协同创新中心, 南京 210044;
2 中国气象科学研究院灾害天气国家重点实验室, 北京 100081

收稿日期:2017-03-03 修回日期:2017-03-20 出版日期:2017-11-30 发布日期:2017-11-30
通讯作者: 翟盘茂 E-mail:pmzhai@cma.gov.cn
作者简介:袁宇锋,男,硕士研究生
基金资助:
国家自然科学基金面上项目（41575094）；公益性行业（气象）科研专项（GYHY201506014）

Changes in Classified Precipitation in the Urban, Suburban and Mountain Areas of Beijing

Yuan Yufeng¹, Zhai Panmao², Li Jian², Chen yang²

1 Key Laboratory of Meteorological Disaster of Ministry of Education, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China;
2 State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China

Received:2017-03-03 Revised:2017-03-20 Online:2017-11-30 Published:2017-11-30

摘要/Abstract

摘要：

利用北京地区1977-2013年18个站点逐小时降水资料，将小时降水分为弱降水（第50百分位值以下）、中等强度降水（第50至90百分位值）以及强降水（第90百分位值以上）3个等级，对北京地区山区、郊区以及城区夏季不同强度等级降水变化特征进行了深入细致的分析。结果表明，北京地区夏季降水量存在显著的减少趋势，这种减少趋势主要是由于弱降水和中等强度降水的显著减少引起的，强降水没有表现出明显的增多或减少趋势；与郊区相比，2004年之后城区的强降水对夏季总降水量的贡献越来越大而弱降水的贡献减小。在降水日变化上，不同地区、不同等级的降水存在差异。弱降水存在清晨和夜间双峰值特征，中等强度和强降水只存在夜间单峰值特征。清晨峰值时刻，山区、郊区和城区弱降水都表现出一致的显著减少趋势；夜间峰值时刻，山区的各等级降水变化不显著，而在2004年之后，城区弱降水少于郊区，强降水则多于郊区。北京地区降水过程不对称性特征（降水过程峰值前后差异性）十分明显，其中以强降水的不对称性最强，相对于郊区和山区来说，城区强降水过程的不对称性有增大的趋势。

关键词: 小时降水, 不同等级降水, 日变化, 降水过程不对称性

Abstract:

In this paper, based on hourly precipitation observations during 1977-2013 from the Beijing area, hourly precipitation in summer (June-Auguest) is classified into three categories:light (below the 50th percentile values), moderate (the 50th to 95th percentile values), and heavy (above the 95th percentile values). The characteristics of the classified precipitation changes are analyzed and the results reveal that both light and moderate precipitation decreased significantly during the research period which mainly caused the decrease in summer totals, but heavy precipitation showed no pronounced trend. Since 2004, the contribution of heavy rainfall to the summer totals in the urban area increased as compared to the suburban area, which is opposite to light rainfall. There are obvious differences in the diurnal variations of classified precipitation. Light precipitation shows a double peak structure in the early morning and at night, while moderate and heavy rainfall show a single peak at night. Light precipitation at the early morning peak-time decreased significantly in the whole Beijing area. Compared with the suburban area, light precipitation in the urban area occurred less frequently whereas heavy precipitation occurred more frequently at evening peak-time after 2004. The asymmetry of the rainfall is obvious, especially, for heavy precipitation. The asymmetry of heavy precipitation events in the urban area exhibit a significant increasing trend.

Key words: hourly precipitation, classified precipitation, diurnal variation, asymmetry

袁宇锋, 翟盘茂, 李建, 陈阳. 北京城、郊和山区不同强度等级降水变化特征比较[J]. 气候变化研究进展, 2017, 13(6): 589-597.

Yuan Yufeng, Zhai Panmao, Li Jian, Chen yang. Changes in Classified Precipitation in the Urban, Suburban and Mountain Areas of Beijing[J]. Climate Change Research, 2017, 13(6): 589-597.

参考文献

[1] Yu R C, Zhou T J, Xiong A, et al. Diurnal variations of summer precipitation over contiguous China[J]. Geophysical Research Letters, 2007, 34(1):223-234
[2] 宇如聪, 原韦华, 李建. 降水过程的不对称性[J]. 科学通报, 2013, 58(15):1385-1392
[3] Li J, Yu R C, Yuan W H, et al. Changes in duration-related characteristics of late-summer precipitation over eastern China in the past 40 Years[J]. Journal of Climate, 2011, 24(21):5683-5690
[4] Zhang H, Zhai P M. Temporal and spatial characteristics of extreme hourly precipitation over eastern China in the warm season[J]. Advances in Atmospheric Sciences, 2011, 28(5):1177-1183
[5] Hu X M, Liu S H, Liang F M, et al. Observational study of wind fields, temperature fields over Beijing area in summer and winter[J]. Acta Scicentiarum Naturalum Universitis Pekinesis, 2005, 41(3):399-407
[6] Sun J S. A study of the basic features and mechanism of boundary layer jet in Beijing area[J]. Chinese Journal of Atmospheric Sciences, 2005, 29(3):445-452
[7] Wang X Q, Wang Z F, Gong Y B. Modulation of urban heat island circulation on mountain-plain wind in the Beijing area[J]. Climatic & Environmental Research, 2008, 13(5):639-644
[8] Zhang C L, Chen F, Miao S G, et al. Impacts of urban expansion and future green planting on summer precipitation in the Beijing metropolitan area[J]. Journal of Geophysical Research Atmospheres, 2009, 114(D2):356-360
[9] Miao S G, Chen F, Li Q, et al. Impacts of urban processes and urbanization on summer precipitation:a case study of heavy rainfall in Beijing on 1 August 2006[J]. Journal of Applied Meteorology & Climatology, 2011,50(4):806-825
[10] Mishra V, Dominguez F, Lettenmaier D P. Urban precipitation extremes:how reliable are regional climate models[J]. Geophysical Research Letters, 2012, 39(3):419-420
[11] Han J Y, Baik J J, Lee H. Urban impacts on precipitation[J]. Asia-Pacific Journal of Atmospheric Sciences, 2014, 50(1):17-30
[12] 李建, 宇如聪, 王建捷. 北京市夏季降水的日变化特征[J]. 科学通报, 2008, 53(7):829-832
[13] Yin S Q, Li W J, Chen D, et al. Diurnal variations of summer precipitation in the Beijing area and the possible effect of topography and urbanization[J]. Advances in Atmospheric Sciences, 2011, 28(4):725-734
[14] Wang J L, Zhang R H, Wang Y. Areal differences in diurnal variations in summer precipitation over Beijing metropolitan region[J]. Theoretical and Applied Climatology, 2012, 110(3):395-408
[15] Song X M, Zhang J, Aghakouchak A, et al. Rapid urbanization and changes in spatiotemporal characteristics of precipitation in Beijing metropolitan area[J]. Journal of Geophysical Research Atmospheres, 2014, 119(19):11250-11271
[16] Zhai Y Z, Guo Y L, Zhou J, et al. The spatio-temporal variability of annual precipitation and its local impact factors during 1724-2010 in Beijing, China[J]. Hydrological Processes, 2014, 28(4):2192-2201
[17] Zhu L T, Chen Y S, Yan R R, et al. Characteristics of precipitation and temperature changes in Beijing city during 1951-2010[J]. Resources Science, 2012, 34(7):1287-1297
[18] Guo X L, Fu D H, Wang J. Mesoscale convective precipitation system modified by urbanization in Beijing city[J]. Atmospheric Research, 2006, 82:112-126
[19] Yang L, Tian F Q, Smith J A, et al. Urban signatures in the spatial clustering of summer heavy rainfallevent sover the Beijing metropolitan region[J]. Journal of Geophysical Research:Atmospheres, 2014, 119(3):1203-1217
[20] 王小玲, 翟盘茂. 1957-2004年中国不同强度级别降水的变化趋势特征[J]. 热带气象学报, 2008, 24(5):459-466
[21] Wang J, Yan Z W, Li Z. Impact of urbanization on changes in temperature extremes in Beijing during1978-2008[J]. Science Bulletin, 2013, 58(36):4679-4686
[22] Jauregui E, Romales E. Urban effects on convective precipitation in Mexico city[J]. Atmospheric Environment, 1996, 30(20):3383-3389
[23] Dixon P G. Patterns and causes of Atlanta's urban heat island-initiated precipitation[J]. Journal of Applied Meteorology, 2003, 42(9):1273-1284
[24] Bornstein R, Lin Q. Urban heat islands and summertime convective thunderstorms in Atlanta:three case studies[J]. Atmospheric Environment, 2000, 34(3):507-516
[25] Guo J P, Deng M J, Fan J W, et al. Precipitation and air pollution at mountain and plain stations in northern China:insights gained from observations and modeling[J]. Journal of Geophysical Research, 2014, 119(8):4793-4807
[26] Jin M L, Shepherd J M, King M D. Urban aerosols and their variations with clouds and rainfall:a case study for New York and Houston[J]. Journal of Geophysical Research Atmospheres, 2005, 110(10):211
[27] Chen F, Kusaka H, Bornstein R, et al. The integrated WRF/urban modelling system:development, evaluation, and applications to urban environmental problems[J]. International Journal of Climatology, 2011, 31(2):273-288

北京城、郊和山区不同强度等级降水变化特征比较

Changes in Classified Precipitation in the Urban, Suburban and Mountain Areas of Beijing

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